Means for the utilization of the energy of the exhaust gases of internal-combustion engines by the striking of said gases



E EXHAUST GASES sun GASES I F. A. BOYSEN anus FOR THE UTILIZATION OF THEENERGY 0? TH or INTERNAL comausTIon mamas BY THE STRIKING 05 Filed Aug.26, 1921 gig/214$ Patented Dec. 8, 1925 UNITED STATES PATEN FFKIE.

FRIEDRICH AUGUST BOYSEN, OF LETPZIG, GERMANY.

MEANS FOR UTILIZATION OF ENERGY OF THE EXHAUST GASES OFINTERNAL-COMBUSTION ENGINES BY THE STRIKING F SAID GASES.

Application filed August 26, 1921.

To all whom it may concern:

Be it known that I, Fnrrnrriorr AUoUsr Borsnx, a citizen of the GermanRepublic, residin at Leipzig, Germany, have invented certain new anduseful improvements in Means for the Utilization of the Energy of theExhaust Gases of Internal-Combustion Engines by the Striking of saidGases (for which I have filed applications in Germany on 8th February1916 and 2nd November,

1919), of which the following is a specification.

This invention relates to the utilization of the burnt explosive gasmixtures of internal combustion engines and it has for its object,besides the muifling of the noise and the con sumption of the smokewhich are already realized with the aid of other devices, to produce anincrease of efiiciency and a saving of fuel. lVith this object in viewthe striking of the exhaust gases is made use of by which said gases areformed into a gas cake situated in front of the exhaust pipe. Throughthe formation of this gas cake the silencing and the consumption ofsmoke are effected.

This invention relates to mufflers for internal combustion engines.

One important object of the invention is to provide an improved form ofmuffler wherein gases forming internal combustion engines will beintroduced into the muffler in opposed streams.

A second important objectof the invention is to provide an improved formof mufiler wherein gases will be introduced in opposed streams in suchrelation to the exhaust of the muffler that their passage through suchexhaust will be delayed.

With the above and other objects in View as will be hereinafterapparent, the invention consists in general of certain novel details ofconstruction and combiations of parts hereinafter fully described,illustrated in the accompanying drawings and specifically claimed.

In the accompanying drawings like characters of reference indicate likeparts in the several views, and:

Figure 1 is an outline sectional view through one form of muflierconstructed in accordance with this invention.

Figure 2 is a sectional View of this form at right angles to Figure 1.

Figure 3 is a view similar to Figure 1 but a showing a modified form ofmuffier.

Serial No. 495,800.

Figure at is a section through the modified form at right angles toFigure 3.

In these mufflers there is provided a substantially spherical main bodyportion 6 into which the exhaust gases are conducted forming internalcombustion engine by means of alined and opposed inlet pipes a whichterminate within the body Z) in spaced relation. At point angles to theaxis of the pipe a is an exhaust neck 0 which may either be a shortspherical neck as shown in Figures 1 and 2 or may be a long curvinglytapered neck as shown in Figures 3 and 4. The axis of the exhaust of theinlet pipe a is preferably more remote from the neck 0 than theequatorial diameter of the spherical which lies at right angles to theaxis of the neck 0. shown in dotted lines at a, in Figures 1 and 2, theaxis may coincide with such diameter.

Furthermore, opposite the neck on the body may be provided with aninternal beveled portion h.

In some instances it is found desirable to have the gases passingthrough the neck flow through helical passages j. With this form ofmuflier the inflowing gases infringe upon each other and, owing to theeddy currents set up through the spherical body flow quietly andsmoothly through the neck 0.

There has thus been provided a simple and efficient device of the kinddescribed and for the purpose specified.

It is obvious that minor changes may be made in the form andconstruction of the invention without departing from the spirit thereof.It is not, therefore, desired to con fine the invention to'the exactform herein shown and described, but it is desired to include all suchas properly come Within the scope claimed.

Having thus described the invention, what is claimed as new, is:

1. In a muffler of the class described, a spherical body, inlet, pipesentering said body'from opposite sides and in alinement, an exhaust neckextending from the body at right angles to said inlet pipes, and vanesin said exhaust neck providing helical passages therethrough.

2. In a muffler of the class described, a spherical body, inlet pipesentering said body from opposite sides and in alinement, an exhaust neckextending from the body at right angles to said inlet pines, and abeveled However, in some instances, as

bafile formed on the interior of the body opposite the exhaust neckabove said inlet pipes, 3. In a muffler of the class described, aspherical body, inlet pipes entering said 5 body from opposite sides andin alinement, an exhaust neck extending from the body at right angles tosaid inlet pipes, a beveled bzillle formed on the interior of the bodyop posite the exhaust neck above said inlet pipes and vanes in saidexhaust neck providing helical passages therethrough.

' In testimony whereof I mzlz: my signature.

FRIEDRICH AUGUST BOYSEN.

